[FFmpeg-trac] #10642(avcodec:new): [hwaccel] AV1 hardware decoding for Apple M3

[FFmpeg]

#10642: [hwaccel] AV1 hardware decoding for Apple M3
-------------------------------------+-------------------------------------
             Reporter:  Nomis101     |                    Owner:  (none)
                 Type:  enhancement  |                   Status:  new
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  hwaccel      |               Blocked By:
  videotoolbox av1                   |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by nenkoru):

 Currently working on this.
 Trying to overcome the -12911 issue, but not luck so far.
 Already took a look into how chromium & moonlight implemented this + one
 forun on apple developer's platform.
 Tried adding more info into configuration that is being passed to VT, no
 luck.
 One thing that I noticed that getting Sequence OBU Header always return
 the same length and bytes for different sample videos:  av1C = {length =
 17, bytes = 0x81040c000a0b00000024cf7f0dbfff3008};
 Buf I am not sure what length and bytes should be returned, I suppose it
 should be 20, but not sure what each bit refers to, reading ISO
 documentation for now.
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Ticket URL: <https://trac.ffmpeg.org/ticket/10642#comment:8>
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